-
InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
Virtual Motion Capture is another free option which allows you to add your VRM model into the software and use your VR headset's trackers to move your model (Granted I prefered Liv's movements more). If you pay for their Japanese Paitron-like thing (300 yen, around $2.5 dollars) you'll gain access to the ability to send that tracking data over to vSeeface which would be preferable as neither of these two softwares provide bone physics or other customization that vseeface allows.
NOTE:
The number of mentions on this list indicates mentions on common posts plus user suggested alternatives.
Hence, a higher number means a more popular project.